Pumping apparatus.



s. E. AARON. PUMPING APPARATUS.

APPLICATION FILED DEQ. 1, 1910.

1,012,789. I y j Patented De@.26,1911.

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mdf-M MMMQMM fw/W @ma-3%?? COLUMBIA PLANOGRAPH CCL, WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

SOLOMON E. AARON, 0F CHARLESTOWN, MASSACHUSETTS.

IPUMPING- APPARATUS.

Application filed December 1, 1910.

To all whom it may concern:

Be it known that I, SoLoMoNE. AARON, a citizen of the United States, residing at Charlestown, in the county of Suolk and State of Massachusetts, have invented new and useful Improvements in Pumping Apparatus, of which the following is a speciflcation.

This invention relates 'to improvements in pumping apparatus and ejectors of the class set forth in United States Letters Patent No. 952,294, issued tome March 15,1910. The apparatus of said patent contains an ejector which receives an actuating stream of water from the water jacket of an internal combustion engine of a boat and the ejector produces a suction which lifts the bilge water and accumulations of oil, dirt, gasolene and gasolene vapor and discharge the same overboard. The apparatus is also adapted for use in other connections.

The object of my present invention is toprovide means to prevent clogging of the jet orifice of the ejector and to provide means whereby deposits of scale and sediment may be readily removed.

The apparatus of the said patent also contains a relief valve which by-passes part of the water before it reaches the jet orifice. In some cases, it is desirable to pipe this relief valve to the water cooled mutiier of the engine and one of the objects of my present invention is to provide means whereby part of the water which would otherwise flow through the relief valve to the muffler may be carried off through another outlet, thus enabling the amount of water flowing to the muffler to be graduated to suit the particular conditions.

To these ends, my invention consists inl the novel features of construction and 1nA the combination and arrangements of parts set forth in the following specification andi sage 2 is a suitable foraminous obstruction y11, preferably consisting of a screen or particularly pointed out in the claims.

The drawing shows a longitudinal verti` cal sectional view of an apparatus embodying my present invention.

In the drawing, 1 is an ejector casing having a pressure inlet passage 2 for the actuating stream, a suction inlet passage 3 for thel entrained stream and an outlet passage 4 for the combined actuating and entrained streams. The pressure inlet passage 2 has an inlet orifice 5 at which the water under pressure enters from any suitable source such, for example, as the water jacket of an Specification of Letters Patent.

Patented Dec. 26, 1911.

serial No. 595,060.

internal combustion engine, as shown in the aforesaid patent, and said passage is provided with a jet orifice 6 located adjacent to the upper end of the suction inlet passage 3 and the inner end of the outlet passage 4;, similar to ejectors of familiar construction.

A by-pass pipe 7 connected to the pressure inlet passage 1 between the inlet orifice 5 and the jet orifice 6 is controlled by a spring pressed relief valve 8. This valve, which forms a part of the subject matter of the aforesaid patent, is for the purpose of relieving the pressure in the pressure inlet passage so that the ejector will not produce too much back pressure upon the water jackets of the engine. Sometimes, in practice, this relief valve is piped to the water cooled muffler of the engine and in such cases it is desirable to provide a means whereby a part of the water which would otherwise flow through the relief valve to the muffler may be carried off through another outlet. Such means forms part of the subject matter of my present invention and will be hereinafter described.

Connected to the pressure inlet passage 2 is an air chamber 9 for equalizing the pulsations in case a reciprocating type of pressure pump is employed. This air chamber forms the subject matter of my pending application, Serial No. 530,181 and forms no part of my present invention. Preferably, the pressure inlet passage 2 has connected thereto a suitable pressure gage 10 by means of which the pressure existing in the inlet passage may be indicated and so that the user knowing the pressure in the inlet passage is enabled to prevent an undue back pressure upon the engine.

I will now proceed to describe the devices which formthe subject matter of my present invention.

Extending across the pressure inlet passieve. The screen is preferably mounted in a plug or cage 12 having therein a chamber 13 and provided at opposite sides thereof with apertures 14: and 15 which constitute a part of the pressure inlet passage 2 of the ejector. This plug or cage is preferably provided with suitable means interengaging with the casing to correctly position said plug and the screen 11 with respect to the orifice 6 and for this purpose I preferably provide the plug with a flange 16 located eX- ternally of the ejector casing and bearing thereagainst and provided with a dowel pin 17 located in a hole 18 in the ejector casing. This pin insures the plug being returned into its proper position in the casing after havingbeen removed therefrom.

Communicating with the chamber 13 of the plug 12 is the passage 19 of an outlet cock 20 having a rotatable valve 21 for closing said passage. Preferably, this cock is provided with a screw-threaded stem 22 having screw-threaded engagement with the plug 12 and said cock is provided with a shoulder 23 bearing against the under side of the ejector casing so that the cock, when screwed into the plug, serves the purpose of drawing the same firmly onto its seat on the upper side of the casing in an obvious manner. This cock serves two very useful functions. In the first place, it serves as a means for flushing out the chamber 13 if any scale,

sediment or other foreign matter has become j lodged therein against the screen 11, and in the second place, the cock serves as a means for regulating the amount of water flowing through the by-pass pipe 7 beyond the relief `valve 8 and when used for the latter purpose it will, of course, be necessary to pipe the outlet of the cock to a suitable point as, for example, in the case of a boat, overboard.

As before stated, in some cases, in practice, it is customary to pipe the relief valvel by-pass to the water cooled muffler of the engine and in such cases it is sometimes desirable to regulate the amount of water flowing to the mufier, this being readily accomplished by adjusting the valve 21, thus causing a certain amount of the water to be led away at that point and consequently diminishing the amount of water which flows through the by-pass 7.

If at any time it becomes necessary to remove the plug 12, this may be readily accomplished by unscrewing the cock 20 and then withdrawing the plug upwardly, after which any foreign substances may be removed from the chamber 13 of the plug 12.

Having thus described my invention, what I claim and desire by Letters Patent to secure 1s:

1. Th'e combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orice and a jet orifice; and a foraminous obstruction extending across said pressure inlet passage between said orifices.

2. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; and means forming a sediment chamber located between said orifices and below said jet orifice.

3. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; and an outlet cock connected to said pressure inlet passage between said orifices.

4:. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a foraminous obstruction extending across said pressure inlet passage between said inlet orifice and said jet orice, and means forming a sediment chamber located between said inlet orifice and said obstruction.

5. The combination, in a device of the 9 class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a foraminous ob struction-extending across said pressure inlet passage between said inlet orifice and said jet orifice, means forming a sediment chamber located between said inlet orifice and said obstruction, and an outlet cock connected to said chamber.

6. The combination, in a device of the class described, of an ejector provided with` a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orice and a jet orifice; a foraminous obstruction extending across said pressure inlet passage between said inlet orifice and said jet orifice, and a removable plug to which said obstruction is attached.

7 The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orice; a foraminous obstruction extending across said pressure inlet passage, and a plug in which said obstruction is mounted, said plug extending' trained stream, and an outlet passage forV the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a foraminous obstruction extending across said pressure inlet passage between said orifices, and a plug in which said obstruction is mounted, said plug extending into said ejector transversely of said pressure inlet passage and being provided with a chamber located between said pressure inlet orifice and said obstruction.

9. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a foraminous obstruction extending across said pressure inlet passage between said orices, a plug in which said obstruction is mounted, said plug extending into said ejector transversely of said pressure inlet passage and being provided with a chamber located between said pressure inlet orice and said obstruction, and means on said plug interengaging with said ejector to correct-ly position said plug and said obstruction withl respect to said orices.

10. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orice; a foraminous obstruction extending across said pressure inlet passage between said orifices, a plug in which said obstruction is mounted, said plug extending into said ejector transversely of said pressure inlet passage and being provided with a chamber located between said pressure inlet orifice and said obstruction, and an outlet cock extending into said ejector and having screw-threaded engagement with said plug, said cock having an outlet passage leading from said chamber.

l1. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage for the actuating stream, a suction inlet passage for the entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a plug extending into said ejector, said plug having therein a passage forming a part of said pressure inlet passage, a foraminous obstruction extending across said pressure inlet passage and mounted in said plug, and an outlet cock having an outlet passage leading from that portion of said pressure inlet passage which is in said plug.

12. The combination, in a device of the class described, of an ejector provided with a pressure inlet passage :for the actuating stream, a suction inlet passage for theJ entrained stream, and an outlet passage for the combined actuating and entrained streams, said pressure inlet passage having an inlet orifice and a jet orifice; a chambered plug extending into said ejector, said plug having therein a passage forming a part of said pressure inlet passage, a straining element extending across said pressure inlet passage and mounted in said plug, and an outlet cock extending into said ejector and having screw-threaded engagement with said plug and provided with a shoulder en gaging the exterior of said ejector, said cock having an outlet passage leading from the chamber of said plug.

In testimony whereof I have hereunto set my hand in presence of two subscribing ywitnesses.

SOLOMON E. AARON.

Witnesses:

Louis A. JONES, `SADIE V. MCOARTHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

